Min fuel on deck for the Legacy is 2.0k pounds, and 2.3k for the Super. If you BINGO, the profile will take you below that, 1.5k/1.8k but still plenty safe. For reference, you can plan on about 400 pounds to make one trip around the VFR pattern and about 800 pounds to get around the bolter/wave-off pattern (essentially an instrument approach, and on shore that amount will vary with how you get vectored)
At the boat, when working "blue water ops", the legacy uses a tank state of 2.5k day and 3.0k night. If you can't get gas from the tanker for some reason, the barricade state is 1.7k, although my airwing adopted a policy to not barricade, but rather keep trying to get them aboard until the fuel state is so low the pilot would just fly next to the boat and make a controlled ejection. That never happened, thanks God.
So,long story short, 1.0k pounds in the tank would make anyone chew the seat cushion up. The fuel levels have been op tested though, and the guy I know that did it said the fuel gauges were very accurate, right up until the second motor flamed out on roll out after landing.
Like Mike said, the fuel reserve requirements are quite different from the FAA.
AMG, back me up on the Legacy numbers, it has been a while.